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http://hdl.handle.net/10872/14413
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Título : | Elemental analysis of coal by tandem laser induced breakdown spectroscopy and laser ablation inductively coupled plasma time of flight mass spectrometry |
Autor : | Dong, Meirong Oropeza, Dayana Chirinos, José González, Jhanis J. Lua, Jidong Lua, Mao, Xianglei Russo, Richard E. |
Palabras clave : | Laser ablation Laser-induce breakdown spectroscopy Inductively coupled plasma mass spectrometry Coal analysis Tandem |
Fecha de publicación : | 10-Feb-2017 |
Resumen : | The capabilities and analytical benefits of combined LIBS and LA-ICP-MS were evaluated for the analysis of coal
samples. The ablation system consisted of a Nd:YAG laser operated 213 nm. A Czerny-turner spectrograph
with ICCD detector and time-of-flight based mass spectrometer were utilized for LIBS and ICP-MS detection,
respectively. This tandem approach allows simultaneous determination of major and minor elements (C, Si, Ca,
Al,Mg), and trace elements (V, Ba, Pb, U, etc.) in the coal samples. The research focused on calibration strategies,
specifically the use of univariate and multivariate data analysis on analytical performance. Partial least square
regression (PLSR) was shown to minimize and compensate for matrix effects in the emission and mass spectra
improving quantitative analysis by LIBS and LA-ICP-MS, respectively. The correlation between measurements
from these two techniques demonstrated that mass spectral data combined with LIBS emission measurements
by PLSR improved the accuracy and precision for quantitative analysis of trace elements in coal. |
URI : | http://hdl.handle.net/10872/14413 |
ISSN : | 0584-8547 |
Aparece en las colecciones: | Artículos Publicados
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